Title :
Design of a sensor array circuit for edge detection
Author :
Zhang, Jian ; Wang, Chunyan
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
In this paper, the design of a sensor array circuit for edge detection is presented. For this design, a new version of edge detection algorithm is proposed to reduce the complexity of inter-pixel connections and to simplify the circuit of each pixel. The processing unit in each pixel consists of current-mode modules and simple logic gates. Compensation procedures are implemented in the analog modules to reduce the effect of device mismatch and charge injection. The simplicity of the circuit makes it easy to be implemented using a digital technology and integrated in detection systems.
Keywords :
CMOS image sensors; array signal processing; charge injection; compensation; current-mode circuits; edge detection; feature extraction; intelligent sensors; logic gates; CMOS sensor array; analog module compensation procedures; charge injection; current-mode modules; device mismatch; edge detection; feature extraction; integrated detection systems; inter-pixel connection complexity reduction; logic gates; pixel processing unit; smart sensor array; Filtering; Image edge detection; Lighting control; Low pass filters; Photoconductivity; Photodiodes; Sensor arrays; Switches; Switching circuits; Voting;
Conference_Titel :
Sensors, 2004. Proceedings of IEEE
Print_ISBN :
0-7803-8692-2
DOI :
10.1109/ICSENS.2004.1426140
